A NY Mets–Mariners trade package that could land Luis Castillo

A Luis Castillo blockbuster only happens if it hurts on both sides. This framework tests how far the Mets and Mariners are willing to go.

American League Championship Series - Toronto Blue Jay v Seattle Mariners - Game Four | Steph Chambers/GettyImagesFor the Mets, the conversation always comes back to the same question: are you serious about shortening the gap between “interesting” and “contender,” or are you just rearranging the infield dirt? All the complementary adds in the world don’t change the fact that a true frontline arm still separates New York from the tier they keep insisting they belong in. That’s where Luis Castillo’s name creeps in.

He’s not the shiny new toy; he’s the proven,…